NM CID GF-9 Practice Questions - New Mexico CID GF-9 Utility Lines Contractor Examination Exam

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When filling a new PVC or ductile-iron water main for hydrostatic testing, why is the line filled slowly with air valves open?

To heat the gaskets To expel trapped air that would make the test spongy, dangerous, and misleading To avoid the need for thrust restraint To satisfy the EPA CGP Notice of Intent

Correct Answer:

To expel trapped air that would make the test spongy, dangerous, and misleading

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